

   
\begin{tikzpicture}[scale=2.54]
% dpic version 2012.02.12 option -g for TikZ and PGF 1.01
\ifx\dpiclw\undefined\newdimen\dpiclw\fi
\global\def\dpicdraw{\draw[line width=\dpiclw]}
\global\def\dpicstop{;}
\dpiclw=0.8bp
\dpiclw=0.8bp
\dpicdraw (0,0)
 --(0,0.375)\dpicstop
\dpicdraw (0,0.5) circle (0.049213in)\dpicstop
\dpicdraw (-0.0625,0.5)
 --(-0.0625,0.541667)
 --(0,0.541667)
 --(0,0.458333)
 --(0.0625,0.458333)
 --(0.0625,0.5)\dpicstop
\dpicdraw (0,0.625)
 --(0,1)\dpicstop
\draw (-0.125,0.5) node[left=-1.5bp]{$ v_g$};
\dpicdraw (0,1)
 --(0.25,1)
 --(0.270833,1.041667)
 --(0.3125,0.958333)
 --(0.354167,1.041667)
 --(0.395833,0.958333)
 --(0.4375,1.041667)
 --(0.479167,0.958333)
 --(0.5,1)
 --(0.75,1)\dpicstop
\draw (0.375,0.958333) node[below=-1.5bp]{$ 50~\Omega$};
\dpicdraw (0.75,1)
 --(0.75,0.8)\dpicstop
\dpicdraw (0.75,0.8)
 --(1.088916,0.8)\dpicstop
\global\let\dpicshdraw=\dpicdraw\global\def\dpicdraw{}
\global\def\dpicstop{--}
\dpicshdraw[fill=white!0!black]
\dpicdraw (1.161084,0.8)
 --(1.088916,0.841667)
 --(1.088916,0.758333)
 --(1.161084,0.8)\dpicstop
cycle; \global\let\dpicdraw=\dpicshdraw\global\def\dpicstop{;}
\dpicdraw (1.161084,0.754282)
 --(1.161084,0.845718)\dpicstop
\dpicdraw (1.161084,0.8)
 --(1.5,0.8)\dpicstop
\draw (1.125,0.748747) node[below=-1.5bp]{$ 1N4007$};
\dpicdraw (1.5,0.8)
 --(1.5,1)\dpicstop
\dpicdraw (0.75,1)
 --(0.75,1.2)\dpicstop
\dpicdraw (0.75,1.2)
 --(1,1.2)
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 --(1.229167,1.158333)
 --(1.25,1.2)
 --(1.5,1.2)\dpicstop
\draw (1.125,1.158333) node[below=-1.5bp]{$ 4.7~\text{k}\Omega$};
\dpicdraw (1.5,1.2)
 --(1.5,1)\dpicstop
\dpicdraw (1.5,1)
 --(1.85,1)\dpicstop
\dpicdraw[fill=black](1.85,1) circle (0.007874in)\dpicstop
\dpicdraw (1.85,1)
 --(1.85,0.625)
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 --(1.85,0)\dpicstop
\dpicdraw (1.708579,0.358579)
 --(1.920711,0.570711)\dpicstop
\filldraw[line width=0bp](1.938388,0.553033)
 --(1.991421,0.641421)
 --(1.903033,0.588388) --cycle
\dpicstop
\draw (1.991421,0.5) node[right=-1.5bp]{$ R_v$};
\dpicdraw (1.85,1)
 --(2.35,1)\dpicstop
\dpicdraw (2.35,1)
 --(2.35,0.625)
 --(2.391667,0.604167)
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 --(2.308333,0.395833)
 --(2.35,0.375)
 --(2.35,0)\dpicstop
\draw (2.391667,0.5) node[right=-1.5bp]{$ R_p$};
\dpicdraw (2.35,0)
 --(2.35,-0.125)\dpicstop
\dpicdraw (2.433333,-0.125)
 --(2.266667,-0.125)\dpicstop
\dpicdraw (2.405556,-0.15625)
 --(2.294444,-0.15625)\dpicstop
\dpicdraw (2.385714,-0.1875)
 --(2.314286,-0.1875)\dpicstop
\dpicdraw (2.35,1)
 --(2.85,1)\dpicstop
\dpicdraw (2.85,1)
 --(2.85,0.525)\dpicstop
\dpicdraw (2.766667,0.525)
 --(2.933333,0.525)\dpicstop
\dpicdraw (2.766667,0.475)
 --(2.933333,0.475)\dpicstop
\dpicdraw (2.85,0.475)
 --(2.85,0)\dpicstop
\draw (2.933333,0.5) node[right=-1.5bp]{$ C_p$};
\dpicdraw (2.85,0)
 --(0,0)\dpicstop
\end{tikzpicture}

